Crater Lake National Park

park, Oregon, United States

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Last updated

June 25, 2026

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Crater Lake National Park is located in southwestern Oregon, United States. The park's centerpiece is Crater Lake, a deep, clear, and intensely blue lake situated within the caldera of the extinct volcano Mount Mazama.1

Formed approximately 7,700 years ago when Mount Mazama erupted and destroyed its upper portion, the caldera is about 6 miles (10 km) in diameter. Wizard Island, a cinder cone, rises from the lake floor. Crater Lake is the deepest lake in the United States, reaching a maximum depth of 1,943 feet (592 meters), and is known for its exceptionally clear, brilliant blue water. The park, established in 1902, covers 286 square miles (741 square km) and offers numerous hiking trails. The area is home to diverse wildlife and plant life, including pine and fir trees, and wildflowers.1

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Crater Lake
…and its surrounding region became Crater Lake National Park in 1902, with an area of 286 square miles (741 square km). By the early 21st century the park had more than 90 miles (145 km) of hiking trails.
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…and its surrounding region became Crater Lake National Park in 1902, with an area of 286 square miles (741 square km). By the early 21st century the park had more than 90 miles (145 km) of hiking trails.
Read More